MLA

Whetherell, active 1793, printmaker. The patent wigg [graphic]. [1 August 1793]. https://collections.library.yale.edu/catalog/10957379.

APA, 6th edition

Whetherell, active 1793, printmaker. ([1 August 1793])[The patent wigg [graphic]]. https://collections.library.yale.edu/catalog/10957379.